I have a 1987 Proline 190 I just bought from my father-in-law. It has the 351Ford engine in it. It's been sitting in storage for quite some time and while I was checking it out I found that one of the exhaust tubes under the deck was badly cracked and it pretty much disintegrated when I removed it. The tube is approximately 32 inches long and 4 inches in diameter and made of fiberglass. The front end of the tube has a 45 degree elbow attached to it and the aft end has a reducer fitting. I'm not sure what this part is called, muffler I suppose, but the tube is hollow with the exception of cupped shaped baffle at the aft end. I need to replace this but I am having trouble locating one on the internet. Can someone please help out a newbie in finding a replacement? Thank you